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Sentence analysis
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Sentence
Span Details
校友会
alumni associationnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
集まり
gathering; meeting; assembly; collection; attendancenoun
に
direction, time, indirect object, or target markergrammar
参加
participation; joining; entrynoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar